Wine errors while running WoW

WoW runs slow but fine, while constantly spamming my log with these messages:

fixme:rawinput:GetRawInputBuffer data (nil), data_size 0x23d580, header_size 24 stub!
fixme:d3d11:d3d11_immediate_context_Map Ignoring map_flags 0x100000.

The rate is about 1MB/min. As far as I can see there are no other errors. Does anybody have any idea what might cause this? I’m using AMD GCN 1.0 card with radeon driver on debian 9.